According to the Ramayana, after completing his earthly duties, Rama ended his life by walking into the Sarayu river and departing for his heavenly abode. This event is known as Rama's 'Jalasamadhi' or final departure. The Sarayu river flows beside Ayodhya, Rama's capital city. Options A, B, and C are other major Indian rivers but not where Rama's life ended.